公开(公告)号：EP4006687A1

公开(公告)日：2022-06-01

申请号：EP21209781.0

申请日：2021-11-23

Applicant: RichWave Technology Corp.

Inventor： Tai, Shun-Nan

IPC: G05F1/56 ,  G05F1/565

Abstract: A voltage regulator (300) includes an output terminal (NOUT), a transistor (M1), a primary driving circuit (110), and a secondary driving circuit (320). The primary driving circuit (110) is coupled to a control terminal (GN) of the transistor (M1). The secondary driving circuit (320) is coupled between the control terminal (GN) of the transistor (M1) and a predetermined voltage terminal (VPRN). In a start-up mode, the transistor (M1) is driven by the primary driving circuit (110) and the secondary driving circuit (320), and the control terminal (GN) of the transistor (M1) and the predetermined voltage terminal (VPRN) are electrically coupled by the secondary driving circuit (320). In a normal mode, the transistor (M1) is driven by the primary driving circuit (110), and an electrical coupling between the control terminal (GN) of the transistor (M1) and the predetermined voltage terminal (VPRN) is disconnected by the secondary driving circuit (320).